[Rd] dates (PR#7008)
Prof Brian Ripley
ripley at stats.ox.ac.uk
Wed Jun 23 14:09:09 CEST 2004
R-bugs is for bugs, and one bug per report. That means it cannot cope
with three-part reports, two parts of which seem to be questions/wishes.
On Tue, 22 Jun 2004 gilescrane at doh.state.nj.us wrote:
> Full_Name: Giles L Crane
> Version: 1.9.0
> OS: Windows 98
> Submission from: (NULL) (22.214.171.124)
> In package foreign, the read.epiinfo() does not
> read dates properly.
> (1) In reading a dataset,
> read.epiinfo made many dates NA.
Can you give a reproducible example, please. Please start a new topic
with a comprehensive subject line, as this one has been closed.
> (2) Instead of reading dates to a POSIXct format,
> why not read to a mm/dd/yyyy format such as
> As you may know, EPI6 calculates and displays
> dates quite directly.
R does not use that date format (which is not an international standard).
Indeed, how does anyone know that is a date (and if "01/01/1989", that it
is in the illogical mm/dd/yyyy format only used in a few countries).
> (3) The package date does not seem to have
> a convenient way of extracting dates
> from POSIXct format.
Well, the date package was written about a decade before POSIXct. Why
would anyone still be using it for new data? (Such a person could easily
write one for his/her own use.)
> Appreciate any comments,
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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